JPS58104978A - Aerosol water and oil repellent composition - Google Patents

Abstract

PURPOSE:To obtain titled composition with decreased disagreeable odor and powder generation in the spraying on textiles or clothings, comprising a fluorine- based water and oil repellent, a propellant and a mixed solvent consisting of a specific proportion of two sorts of chlorine-based solvents having different boiling points. CONSTITUTION:The objective composition comprising (A) 0.05-5wt% of a fluorine-based water and oil repellent pref. made of a polymer derived from a monomer of formulaI(R<f> is 3-20C perfluoroalkyl; R<1> is 1-8C-alkylene; R<2> is H, or methyl) or II (R<3> is H or 1-3C-alkyl), (B) 35-98.95wt% of a mixed solvent consisting of (i) a chlorine-based solvent of a boiling point 70-130 deg.C (pref. 1,1,1-trichloroethane) and (ii) a second chlorine-based solvent of a boiling point 20-60 deg.C (e.g. dichloromethane) with a weight ratio (i)/(ii) being 10/90-60/40 and (C) 1-65.95wt% of a propellant such as LPG.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an aerosol water and oil repellent composition that improves the unpleasant odor and dusting phenomenon of slag agents that occur when sprayed on textiles, clothing, etc.

Various water repellents are used to impart water repellency to textiles, clothing, leather, etc., but fluorine-based water and oil repellents have superior water-repellent performance compared to silicone-based water repellents. Recently, it has been widely used as an aerosol type because it has the advantage of being fast-acting and effective in small amounts, and is also oil-repellent, so it can be expected to have an antifouling effect.

However, solvents that can dissolve fluorine-based water and oil repellents are relatively limited, and 1.1.1-trichloroethane and perchlorethylene are usually used, but these have a strong odor and are not used for general household use. Not recommended for use. On the other hand, ale alcohol, isopropyl alcohol, and ethylene glycol, which are widely used as general household solvents and have a weak solvent odor, are not preferred because they have a weak ability to dissolve fluorine-based water and oil repellents. Therefore, dichloromethane, which is a solvent that can dissolve fluorine-based water and oil repellents and reduce unpleasant odors during use,
1,2,2-)lichloroethane is used, but these have the following drawbacks. In other words, when an aerosol water/oil repellent containing these solvents is sprayed onto clothing, the low boiling point of the solvent and fast drying speed causes the fluorine-based water/oil repellent to aggregate on the surface of the fuzzed fibers, making it look like a white powder. A so-called dusting phenomenon occurs. Additionally, since the particle size of the fluorine-based water and oil repellent particles when sprayed becomes too small, the number of particles that are dispersed into the air by wind, etc. increases, and the amount that reaches clothing decreases, resulting in a decrease in water and oil repellency. I don't like it.

The present invention: As a result of repeated research to solve the above-mentioned drawbacks, two types of chlorinated solvents having different boiling points are combined as a solvent for an aerosol water- and oil-repellent composition containing a fluorine-based water- and oil-repellent. The present inventors have discovered that, by doing so, the unpleasant odor and dusting phenomenon of the solvent that occurs during spraying can be significantly improved.

That is, the present invention provides an aerosol water and oil repellent composition comprising a fluorine-based water and oil repellent, a solvent, and a propellant, in which a chlorine-based solvent having a boiling point of 76 to 130 °C < Al and 20 to 60 °C as a solvent. Chlorinated solvents with a boiling point of °C (
13) and in a weight ratio of 10/90 to 60/40 (weight ratio).

The fluorine-based water and oil repellent in the present invention is a polymer of a perfluoroalkyl group or a polymerizable monomer having a fluoroalkyl group, or a copolymer of the monomer and other monomers, and is a commonly available commercially available fluorine-based water and oil repellent. Water and oil repellents of this type can also be used as they are. Of these, the expression (
1> or (1), or a copolymer of these and the formula (]) is preferred.

R'RIOCOC (R2) = CH2... Tomo... Song...
・・・・・・・・・・・・・・・・・・・・・・・・(
1) RfSO2N(R,3)R? 0C(R2)=CH
2・・・・・・・・・・・・・・・・・・・・・(Il
l (wherein, R is a perfluoroalkyl group having 3 to 2 carbon atoms, R1 is an alkylene group having 1 to 8 carbon atoms, R2 is hydrogen or a methyl group, and R3 is hydrogen or an alkyl group having 1 to 3 carbon atoms. .) 1('0COC(R5) =CH2・・・・・・・・・
Decoy... Song... Song times... Song...
゛≠ indicates a group. ) Furthermore, the monomer represented by the general formula (II) and the monomer represented by the general formula (1), such as acrylonitrile, methacrylonitrile, ethylene, vinyl acetate, styrene, phtadiene, and chloroprene, instead of or together with the monomer represented by the general formula (1) A copolymer of one or two types of fluoroalkyl group-containing linear monomers can also be used. By copolymerizing these monomers that do not have a fluoroalkyl group, it is possible to appropriately improve properties such as durability, flexibility, and feel in addition to water and oil repellency and dirt releasability. In addition to using one type of polymer as the water and oil repellent, it is also possible to use a mixture of two or more types of polymers having different content ratios of fluoroalkyl groups.

For example, a copolymer of general formulas (1) and (1) and a copolymer of general formulas (n) and (n) may be mixed and used.

The amount of the fluorine-based water and oil repellent is 0.05 to 55 to 5% by weight or 0.3 to 2% by weight. The blending amount is 0.05
If the weight ratio is less than 5, sufficient water and oil repellency cannot be obtained, and if the weight ratio exceeds 5, the solubility in chlorinated solvents will decrease, and the texture of the treated material will deteriorate or whitening will occur. It is.

The solvent in the present invention is a chlorinated solvent having a boiling point of 70 to 130°C at normal pressure and a chlorinated solvent having a boiling point of 20 to 60°C ((AV<B)). 10/90
It is a mixed solvent within the range of ~60/40 (fc it ratio), and by using such a special solvent at a specific blending ratio, it is possible to improve the unpleasant odor and dusting phenomenon of the solvent. be. Here, chlorinated solvents mean chlorinated hydrocarbon solvents and Freon solvents, and chlorinated solvents (
5) For example, 1.1.1-trichloroethane (87°C), trichlorethylene (114°C), S
-tetrachlorodifluoroethane (92°C) [Freon 112], and examples of the chlorinated solvent (B) include 1.1-dichloroethane (59°C), dichloromethane (40°C), 1.1. 2-. 1'Refluoro-1,2,2-)dichloroethane (48°C) (Freon 113) is oxidized.The numbers in parentheses are:
Shows the boiling point at normal pressure. Among these, chlorinated solvents (as a formula, 1.1.1-
Trichloroethane and S-tetrachlorodifluoroethane are preferred, and chlorinated solvents (from the viewpoint of water repellency and odor, dichloromethane, 1.1.2-)rifluoro-1,2.2-)IJ chloroethane are preferred.

In the present invention, the blending ratio of chlorinated solvent (5) and (B) is important, and the blending ratio of chlorinated solvent (5) is 10/90.
If it is less than this, the ability to improve the dusting phenomenon will be weak, and the particle size of the fine particles of the fluorine-based water repellent will become too small during spraying, resulting in a decrease in the amount reaching the clothing surface, which is undesirable.

Furthermore, if the blending ratio of the chlorinated solvent (chlorinated solvent) exceeds 60/40, an unpleasant odor during spraying will become strong, which is not preferable. The blending amount of the mixed solvent in the product of the present invention is 357-98.95% by weight, preferably 60-97% by weight.

As the propellant in the present invention, any commonly used propellant can be used. For example, LPG,
Propane, butane, dichlorodifluoromethane (Freon 12), fluorotrichloromethane (Freon 11)
, dichlorotetrafluoroethane (Freo/114),
Examples include dimethyl ether, CO2, NO, etc.

The amount of propellant blended in the product of the present invention is 1 to 64.95% by weight, preferably 2 to 50% by weight.

The aerosol water and oil repellent composition of the present invention further includes a small amount of a silicone water repellent, an insect repellent, an antistatic agent, a flame retardant,
Fluorine-containing alcohol, fluorine-based surfactant, carbon number 3 or more
8 diols, monoterpene alcohols and derivatives thereof, fragrances, etc. can be blended.

According to the product of the present invention, natural fibers such as cotton, wool, and silk.

Regenerated fibers such as rayon and cupro, and acetate.

Semi-synthetic fibers such as triacetate, polyester.

Polyamide, polyacrylonitrile, polypropylene/,
Synthetic fibers such as polyvinyl chloride, mixed fibers thereof, and fabrics, clothing, and glass fibers made from them.

Asbestos fibers, glass, paper, wood, leather9 fur.

It can impart excellent water and oil repellency to bricks, cement, metals, plastics, and plaster without dusting. At this time, the effect of adding oil repellency
, it also has an antifouling effect.

Next, the present invention will be explained in detail with reference to Examples. In the following examples, water repellency, oil repellency, dusting, and odor were evaluated by the following methods.

0 JI using wool tropical and Teto cotton as the water repellent treated material
Evaluation was made by the spray method of 5-L-1092.

The evaluation criteria are shown in Table-1.

Table-1 0 Oil repellency. - Compositions with various mixing ratios of Heflin and Nudicol were placed on test cloths (wool tropical), and oil repellency was determined by the liquid composition that could retain the droplets for 3 minutes or more. The evaluation criteria for oil repellency are shown in Table 2. .

Table 2: A water and oil repellent composition was sprayed onto a black wool flannel coated with 0 powder, and the state of the powder produced on the fiber surface immediately after spraying was evaluated using the following criteria.

5 No dusting 3 Slight dusting 1 Significant dusting 0 The odor aerosol water and oil repellent composition was sprayed into the order room and the odor was reported to a panel of 10 experts.1. 1.1
-) Comparison with a dichloroethane blended product (standard product) was evaluated based on the following criteria, and the average value was determined.

5 Much better than the standard product 4 Slightly better than the standard product 3 Equal to the standard product 2 Slightly worse than the standard product 1 Much worse than the standard product Example 1 Various blending ratios of chlorinated solvents) and post) Aerosol water and oil repellent composition: CH3 o CF 80 NC) I Water and oil repellent consisting of a copolymer of CHococH=cH2 and 17222 C811, 0COCH=CH2 0.5% by weight 01
．． 1. Mixed solvent of 1-1-lichloroethane (solvent A) and dichloromethane (solvent B) 83% by weight O hexylene glycol 0.5 it Ei% O propellant C
LP(i) 16111% was produced and its performance was evaluated. The results are shown in Table-3.

The solvent (A)/β) in the table indicates the weight ratio.

Table 3 Example 2 An aerosol water and oil repellent was produced with the same ingredients and blending amounts as in Example 1, except for changing the type and blending ratio of chlorinated solvent (5) (component), The performance was evaluated.The results are shown in Table 4.

Table-4

Claims (1)

[Claims] 1. In an aerosol water and oil repellent composition comprising a fluorine-based water and oil repellent, a solvent, and a spray agent, a chlorine-based solvent having a boiling point of 70 to 130°C as a solvent and 20
A chlorinated solvent (B) having a boiling point of ~60°C
An aerosol water and oil repellent composition characterized by using a mixed solvent in the range of 90 to 60/40 (weight ratio).